Part Number: SN74LVC8T245-Q1
I see the following note in the SN74LVC8T245-Q1datasheet:
"To ensure the high-impedance state during power up or power down, nOE should be tied to VCC through a pullup resistor"
Is this a requirement even for pins that are designated as inputs via the DIR pin? IE, if DIR is tied to Vcca and nOE is tied low throughout power-up, is there a risk that the A ports will be enabled and back-drive?
What if DIR and nOE are both tied to Vcca as Vcca is brought up, then nOE is pulled low, then Vccb is brought up last?
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Watch the Introduction to AXC Family
Read the app note on Power Sequencing for the AXC family
Evaluate the AXC8T245 EVM and watch the translation using the EVM
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